| Month | Bat Status | Activity |
| May | Bats are pregnant and have the ability to find a new home, if required. | One-way exit installation period May 1 to 31 |
| June | Sensitive period: Bats are birthing and nursing, baby bats cannot fly. | *Eviction and removal may be acceptable in accordance with the Bat Eviction Policy |
| July | ||
| August | ||
| September | Pups are flying. Bats are mating and returning to their winter homes. | One-way exit installation period September 1 to 30 |
| October | Sensitive period: Bats are mating, pups are flying and moving to winter homes and are hibernating. | Avoid installing new one-way exits. *Eviction and removal may be acceptable in accordance with the Bat Eviction Policy |
| November | ||
| December | ||
| January | ||
| February | ||
| March | ||
| April |
* When there is an immediate human health and safety concern or major impediment to building use.